documentation(EJ2-000): source update from ej2-popups-docs

src/popups/dialog/template.md

@@ -21,7 +21,11 @@ The Dialog footer can be enabled by adding built-in [`buttons`](../api/dialog/#b
 
 > The [`buttons`](../api/dialog/#buttons) and [`footerTemplate`](../api/dialog/#footertemplate) properties can't be used at the same time.
 
-The below example demonstrates the usage of header and footer template in the Dialog
+## Content
+
+The Dialog content can be provided through the [`content`](../api/dialog/#content) property, and it accepts both text and HTML string as content.
+
+The below example demonstrates the usage of header, footer and content templates in the Dialog control.
 
 {% tab template="dialog/template",sourceFiles="app.ts,index.html,styles.css",es5Template="templates-template" %}